This issue — the only issue to do so that year — replaced the table of contents with an illustration, the first time something like that had been tried in the Era.
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Cite Keepa
Regrettably, meanies have stolen content from Keepa in the past! I'm confident you will choose honesty and cite this page like this:
MLA: Parshall, Ardis E. "Improvement Era, December 1906." Keepapitchin.org, 15 Feb 2016, https://keepapitchinin.org/2016/02/15/improvement-era-december-1906/.
APA: Parshall, A. (2016, Feb 15). Improvement Era, December 1906. Keepapitchinin.org. https://keepapitchinin.org/2016/02/15/improvement-era-december-1906/
HTML: <a target="_new" href="https://keepapitchinin.org/2016/02/15/improvement-era-december-1906/">Improvement Era, December 1906</a>